Amazon has the OBi110 VoIP Telephone Adapter & Voice Service Bridge for $50 - $8 off with coupon code 42OBi110
with free shipping. Still supports Google Voice and features SIP & OBiTalk VoiP services. The OBi110 includes an FXO port to connect a landline (not included in the OBi100 model). Obihai OBI202 VoIP Adapter w/ Router for $75 - $10 off in cart = $65 with free shipping.